Not to be confused with Heart of the Land, the fifth book in the Fall of the Beasts series.
The Heart of the Land is an amulet crafted by Kikimi and her spirit animal, a Gila monster. It is one of the four treasures of the past and represents Amaya. It was found by the Four Fallen in Heart of the Land.
This amulet gives the wielder the power to make sinkholes, tunnels, and make a big invisible shield. It can also make small earthquakes, and possibly make the wielder's bite venomous. The Heart gives power to anyone, even those who do not have a spirit animal.
Before the bond token's reveal, the Heart was disguised as a scaly-looking obsidian-black rock, relatively the size of a baby's fist. It is a small stone on a chain with the shape of a Gila monster inside the stone.